Heat oil in large skillet over medium-high heat. Cook and stir artichoke hearts, onion and garlic in hot oil 5 to 10 minutes until onion is soft and golden. Add broth; cover. Bring to a boil over high heat; reduce heat to medium-low. Simmer 10 to 15 minutes. Uncover and boil until liquid has evaporated.

Preheat broiler. Spread marinara sauce in bottom of 8-inch square broilerproof baking dish or 4 individual broilerproof serving dishes. Arrange artichoke hearts cut side down in sauce. Sprinkle with cheese. Brown under broiler about 5 minutes or until sauce is heated through and cheese is melted. Garnish, if desired. Serve immediately.

Tip

To serve as a main course, prepare 1/2 pound fettuccine or spaghetti according to package directions. Divide pasta between two warm plates and pour 1/2 of artichoke hearts mixture over each serving.